Testing the Brumby Pump - How to pump out water using air.

This water pump operates by using air pressure. It's amazing but it does work. I took a chance though but after seeing some clips on how it works I thought it worth a try. Fantastic method of pumping water. Next phase is to take it down the borehole about 500m from the water tank at the house. This will be the THE test but I'm confident it will work. The water table at the borehole is quite close to the surface, about 3m. So that should be no problem for a Brumby.